ACCESSIBILITY: The location of economic activity (especially in terms of land) relative to other activities. As real estate agents are prone to say, "The three most important factors in real estate are 'location, location, location.'" Accessibility determines how easy or difficult (read this as costly) it is to allocate good, services, and resources. Transportation is a key factor in accessibility. Efficient, low cost transportation systems improve accessibility.

WEIGHT: When applied to location theory, the relative attractive force of one activity to another based on transportation cost. The weight of an activity in this context is comparable to the weight of matter subject to gravitation forces. The weight of an activity is greater if it incurs higher transportation cost. As such, it is attracted, or pulled, to other activities to reduce transportation cost. With the weight (transportation cost) of an activity is often related to physical weight (heavier items cost more to move), it need not be. Other factors affecting weight include special handling (security, comfort) and type of transportation (walking, automobile, airplane).

The difference between the total opportunity cost of production and the total revenue received by a firm. Economic profit is what remains after ALL opportunity cost associated with production (including a normal profit) is deducted from the revenue generated by the production. Economic profit is one of three alternative notions of profit. The other two are accounting profit and normal profit.

Today, you are likely to spend a great deal of time at a flea market trying to buy either a pleather CD case or a how-to book on fine dining. Be on the lookout for telephone calls from long-lost relatives.Your Complete Scope